Machine-drill sharpener



No. 625,!40. Patented May I6, I899. Jul. BRDSSOIT. MACHINE DRILL SHARPENEB.

(Application filed Tuna 2, 189B.)

2 Sheats--Sheet I.

(No Model.)

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No. 625,l40'. Patented May l6, I899. J. J. BBOSSOIT. MACHINE DRILL SHARPENEB.

(Application filed June 2, 1898.) (N0 I dBL) 2 Shuts-Sheet 2.

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UNITED STATES PATENT OFFICE.

JAMES JOSAPH BROSSOIT, BUTTE, MONTANA.

MACHINE- DRILL SHAR PENER.

SPECIFICATION forming part of Letters Patent No. 2 ,14 dated M y 1899- A li ti fil d June 2,1898. Serial No. 682,353. (No model.)

T0 at whom it'may concern.-

Be it known that LJAMES J OSAPH Baossorr,

of Butte, in the county of Silver Bow and State of Montana, have invented a new and Improved Machine-Drill Sharpener,of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved machine for sharpening machine-drills in a very simple manner, With great accuracy and in large numbers,in a very short time, and Without the employment of skilled labor.

The invention consists of novel features and parts and combinations of the same, as will be described hereinafter and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a front elevation of the improvement with the drill in section. side elevation of the improvement. Fig. 3 is a sectional side elevation of the same with parts in a different position. Fig. 4. is a sectional plan view of the same. Fig. is a perspective View of one of the cylindrical swages, and Fig. 6 is a like view of the swage or dolly for the drill end.

The improved machine is provided With a anvil-block A, set on a suitable foundation B, which supports a frame 0, carrying the rest of the machine. On the top of the anvilblock A is secured, by a dovetail and key or other means, an anvil D, over which is mounted to reciprocate a hammer D, fitted to slide vertically in suitable guideways in the frame 0. The machine-drill E to be sharpened at its flanges or wings, as well as on the ends, is set in the anvil D by having one of the vertical flanges extend in a vertical groove in the anvil, the side flanges resting on the top of the anvil. The upper wing is adapted to be engaged by a recess in the under side of the hammer D, and the vertical wings are adapted to be swaged in cylindrical swages F F, held turnably in suitable seats formed in the anvil D and the hammer D. Each of the cylindrical swages F.is provided in its peripheral surface with longitudinal recesses F shaped according to the form intended to Fig. 2 is a be given to the drill-flange to be sharpened,

it being understood that the several recesses F adapted to engage one of a series of apertures arranged in a circle in the outer face of the anvil D and the hammer D, as will be readily understood by reference to Fig. 1, so thatthe swages can-be set and locked in place,

the desired recesses F being opposite each other for engagement with the ends of the vertical drill-flanges to sharpen the same on the hammer D, reciprocating and striking with its swage Fthe top flange of the drill, and thereby likewise treating the bottom of .the flange with the swage F to sharpen. said flanges.

In the rear of the anvil D and hammer D is arranged a swage or dolly G, dovetailed in the end of ahammer H, fitted to slide in suitable bearings in the frame C, but in a horizontal direction, to bring the dolly G in contact with the end of the drill-shank to sharpen the said end. The dolly G is formed for this purpose with the usual grooves G (see Fig. 6') to form cross-cutting edges on the end of the drill. The swage G is adjustably held in a vertical direction on the hammer H and is provided with a screw-rod G turning in a flange G and screwing in the hammer H. (See Fig. 3.) By this arrangement the intersection of the cross-grooves G can be brought in proper position relative to the end of the drill E under treatment. M

The hammers D and H are successively reciprocated from the same means, and for this purpose I provide said hammers with recesses F and H, respectively, adapted to be engaged by ball-head I of a piston-rod I, socured on a piston fitted to slide in the cylinder J, driven by compressed-air, steam, or other motive agent supplied from a suitable source with a flexible pipe J. The cylinder J is mounted on arms K, pivoted on theforward standards of the frame 0 at K, a handle K being secured to one of the arms to permit the operator to impart a swinging motion to the arms and move the cylinder J either into a vertical position for engaging the head I with the recess F of the hammer D or to bring the said cylinder into a horizontal position, as illustrated in Figs. 3 and 4, to connect the head I with the recess H of the hammer II. When the cylinder J is in either position and its piston is reciprocated, then the corresponding hammer D or II is actuated for operating either swage F or G.

In order to guide the head 1 into the corresponding recess F or H, I provide the frame 0 with forks 0 0 adapted to be engaged by the head I and slide the latter down into the corresponding recess F or H at the time the cylinder J moves into a vertical or horizontal position. A spring H connected with the hammer H, holds the same outward away from the inner faces of the anvil D and hammer D to bring the recess H to the foot of the fork G and permit a ready connection of the head I with said recess.

In the pipe J is a valve J carrying on its valve-stem J 3 a double arm J pressed on by a spring J for normally holding the valve in a closed position and shutting off the motive agent from the cylinder J. The double arm J is adapted to move in contact with an arm.

L at the time the cylinder J moves into a horizontal position to turn the valve, so as to connect the pipe J with the interior of the cylinder and actuate the hammer H and its swage G. The arm L is under the control of the operator and is for this purpose secured on a shaft L, journaled in the frame 0 and provided at its outer end. with an arm L on which is pivoted a shifting rod L fitted to slide in a suitable bearing on the frame 0 and provided at its forward end with a handle L within convenient reach of the operator. Thus when the operator desires to shut off the motive agent he simply pulls the rod L outward and moves the arm L from under the arm J to allow the spring J to close the valve J Normally, however, the arm L stands under the arm J so that the valve is opened for reciprocating the hammer H, as above explained. The arm J is also adapted to move in contact witha projection L carried on the vertical standards of the frame 0 to open the valve at the time the cylinder J moves into a vertical position, so that the hammer D is reciprocated by the movement of the piston in the cylinder.

When the hammer is in action, then the drill E is locked in place by the swages F F, and for this purpose I provide a cam-arm N, adapted to engage the top edge of the hammer D and force the latter downward, so as to cause. the swage F to press on and clamp the drill E in position between the swages F and F. The cam-arm N is secured on a shaft N, journaled in the arms N pivoted at N to the frame 0, one of the arms N being formed with a shoulder N adapted to be engaged by a lug N from the fulcrum end of a lever N, secured to the shaft N, which forms the fulcrum for the lever. The outer end of the lever N is pivotally connected by fulcrumed on the frame.

a link N with a treadle O, fulcrumed on the frame and pressed on by a spring 0 for normally holding said treadle in an uppermost position, as indicated in Fig. 2. The treadle O is pivotally connected with the slotted end 0 of an arm 0 hung on one of the arms K, carrying the cylinder J, so that when the latter moves into a horizontal position, as shown in Fig. 3, then the arm 0 pushes the treadle O downward against the tension of the spring 0, thereby causing the link N to pull on the lever N, so as to swing the cam-arm N in firm engagement with the hammer D and press the latter downward for clamping the drill in place, as above mentioned.

Now when the operator desires to release the drill E at the time the hammer H is out of action and the cylinder J is swung back into a vertical position then the link 0 allows the treadle to swing upward, so that the link N imparts a swinging motion to the lever N and swings the cam-arm N upward, and on a further upward movement of the treadle, lifted by the arm 0 the lug N moves in engagement With the shoulder N and swings the arm N outward, and Withit the shaft N and the cam-arm N, to fully remove the latter from the hammer D and allow said hammer to reciprocate up and down to swage the wings or flanges of the drill, as previously explained. It will be seen that by the arrangement described the hammer D is antomatically locked or unlocked, according to the position of the cylinder J.

In order to counterbalance the arms K and the cylinder J, a bell-crank lever K is provided, fulcrumed at K to one side of the frame 0, a link K connecting the said bellcrank lever with a weighted lever K likewise By this arrangement it requires but little power on the part of the operator to manipulate the handle K to swing the cylinder J from its vertical position intoa horizontal position, or vice versa.

On the front faces of the anvil D and hammer D are formed fulling-recesses D D for treating the end of the drill previous to sharpening the same by the swage G in the reciprocating hammer H.

The operation is as follows: When the several parts are in the position illustrated in Figs. 3 and 4, then the drill E is clamped between the swages F F and the hammer H reciprocates, so that the swage G forms cutting edges at the end of the drill. When this has been done, the operator swings the cylinder J into a vertical position to connect the head I with the hammer D, so that the latter is now reciprocated to cause the swages F F to sharpen the vertical wings or flanges of the drill E. lVhen a pair of flanges have been sharpened, the drill is inverted, the remaining flanges being in a vertical position, to be treated by the swages F F, as before explained. By the arrangement described it requires but one workman to sharpen a large number. of drills in a comparatively short time. The special function of the fulling-recesses D D is to draw an edge on the drill before treating it with the swages-G, as above described.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. A drill-sharpener comprising a pair of swages for engaging the shank at opposite sides, one of the swages having a reciprocating movement, a reciprocating 'end swage at an angle to the pair of swages, and a cylinder mounted to swing and having a reciprocating piston arranged for connection with either of said reciprocating swages, substantially as shown and described.

2. A drill-sharpener comprisinga drillholder, a reciprocating swage for sharpening the end of the drill, a cylinder mounted to swing and having a reciprocating piston adapted to be connected with or disconnected from the said end swage, and mechanism 0perated by the movement of the said cylinder for lockin g and unlocking the said drillholder, substantially as described.

A drill sharpener comprising a drillholder, a locking device for the drill-holder, a swage for the end of the drill, mechanism adapted to be brought into engagement with the said swage to reciprocate the same and a connection between the said mechanism and the locking device for the drill-holder whereby when the mechanism is brought into engagement with the end swage to operate the same, the drill-holder is locked in position, substantially as set forth.

4:. A drillsharpener comprising a drillholder, a reciprocating hammer and a swage formed with sharpening-recesses for engagement with the end of the drill to sharpen the same, the said swage being adjustably held on the end of the hammer and provided at its top with a flange extending over the top'of the hammer and a screw-rod turning in the said flange and screwing into the hammer, substantially as shown anddescribed.

5. A drill-sharpener comprising an anvil, a hammer mounted to reciprocate, said anvil and hammer being provided with drill-shankflange swages held opposite each other in said anvil and hammer, a reciprocating end swage or dolly at an angle to the said swages and adapted to operate on the end of the drill, and a cylinder mounted to swing and having a reciprocating piston arranged for connection with either the said hammer or the said end swage, substantially as shown and described.

6. A drill-sharpener comprising an anvil, a hammer mounted to reciprocate, said anvil and hammer being provided with drill-shankflange swages held opposite each other in said anvil and hammer, a reciprocating end swage or dolly at an angle to the said swages and adapted to operate on the end of the drill, a cylinder mounted to swing and having a reciprocating piston arranged for connection with either the said hammer or the said end swage, and means for locking the hammer in place, to cause the flange-swages to clamp the drill in place while the piston actuates the end swage, substantially as shown and described.

7 A drill-sharpener comprising an anvil, a hammer mounted to reciprocate, said anvil and hammer being provided with drill-shankflange swages held opposite each other in said anvil and hammer, a reciprocating end swage or dolly at an angle to the said swages and adapted to operate on the end of the drill, a cylinder mounted to swing and having a reciprocating piston arranged for connection with either the said hammer or the said end swage, and means for locking the hammer in place, to cause the flange-swages to clamp the drill in place while the piston actuates the end swage, said means being controlled by the movement of the cylinder, substantially as shown and described.

8. A drill-sharpener comprising an anvil, a hammer, adjustable swages held in said anvil and hammer, means for fastening the swages in position, means for locking the hammer in place and clamping the swages in engagement with the drill-shank, a hammer reciprocating at an angle to said swages and an end swage carried by the reciprocating hammer, substantially as shown and de'- scribed.

9. The combination with the hammers arranged to reciprocate at angles to each other and provided with swages, the said hammers being each formed with a recess, of the 'eylim der mounted to swing and having a reciprocating piston, the piston-rod being formed with a ball-head adapted to engage the recess in either of said hammers, substantially as shown and described.

10. The combination with an anvil, a hammer mounted to reciprocate vertically, the said hammer and anvil being provided with swages held opposite each other and a hammer arranged to reciprocate horizontally and carrying a swage, the said hammers being provided with recesses, of a cylinder mounted to swing and having its piston-rod provided with a ball-head, means for moving the cylinder either into a vertical or a horizontal position for engaging the piston-rod with the recess in either of said hammers, and guides for directing the said piston-head, substantially asshown and described.

11. In a drill-sharpener, the combination with the swages arranged to reciprocate at angles to each other, of the eylindermounted to swing and having a reciprocating piston arranged for connection with either of said swages, a pipe forsupplying the cylinder with the motive agent, a spring-controlled valve in said pipe, and means for opening said valve when the cylinder is moved to connect its piston with either of said swages, substantially as described.

12. A drill-sharpener, comprising an anvil, a hammer mounted to reciprocate the said anvil and hammer being provided with swages for the flanges of the drill-shank, a cam-arm adapted to engage the top edge of the said hammer for locking the hammer in place to cause the flange-swages to clamp the drill, and a reciprocating end swage at an angle to the other swages and adapted to operate on the end of the drill, substantially as shown and described.

13. A drill-sharpener, comprising an anvil, a reciprocating hammer, the said anvil and hammer being provided with swages for the drill shank flanges, a hammer adapted to re- 

